After four years away from competitive sport, she took up biathlon in 1989. Three years later she earned silver medals at the Olympic Games in Albertville in both the 7.5km event and in the 3x7.5km relay. In the 15km race she missed only one target and won the gold medal by 11.3 seconds. Antje also won a silver medal in the 4x7.5km relay at the Olympic Games in 1994.